They have nothing. They are just hoping for something,". Asked about the security situation in Port-au-Prince, U.S.General Ken Keen noted that gang activity and lawlessness existed in Haiti before the earthquake.

VOA: standard.2010.01.18

So, I just want to write a few examples down with a few values for delta u or delta H or delta S, and see whether we can get any clues from what we see.

我先写一些例子,例子包含一些内能，自由焓和熵的变化数值，然后看从中,我们能不能得到一些启示。

麻省理工公开课 - 热力学与动力学课程节选

And we can we can do this in principle except for one important detail, which is that enthalpy just like energy u isn't measured on an absolute scale but on a relative scale, right?

除了一个重要的细节,就像能量U一样，它不是,以绝对标度度量的,而是以相对标度度量的，对吧？

麻省理工公开课 - 热力学与动力学课程节选

At the Indy 500 race in May, Helio Castroneves of Brazil took the checkered flag for the third time in his career, just weeks after a jury had cleared him of U.S.

VOA: standard.2009.12.24

Some critics have questioned why the president is traveling at a time when so many pressing matters are before him not just Afghanistan, but also the U.S.economy and his ongoing campaign for health-care reform.

VOA: standard.2009.11.12

U.S.officials are concerned such a prolonged political process will create an opening for al-Qaida to try to foment ethnic strife, just as tens of thousands of U.S.troops are scheduled to be leaving Iraq.

VOA: standard.2009.12.12